Across
1
Armored warrior of medieval times
3
Alloy of copper and tin used in early tools
5
Formal agreement between nations
6
Period of one hundred years
7
Exchange of goods between peoples
8
Relating to the Middle Ages
9
Medieval land-for-service system
Down
2
Fundamental law of a nation
4
Advanced stage of human society
10
Deadly epidemic disease
11
Long and distinct period of history